Home / 78,831.95-118,177.59-28,900.38

Finding the Fourth Proportional to 78,831.95, 118,177.59 and 28,900.38

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Solution

The fourth proportional to 78,831.95, 118,177.59 and 28,900.38 is: 43,324.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,831.95 : 118,177.59 = 28,900.38 : x
  2. Step 2: Convert to fraction form
    78,831.95/118,177.59 = 28,900.38/x
  3. Step 3: Cross multiply
    78,831.95x = 118,177.59 × 28,900.38
  4. Step 4: Simplify right side
    78,831.95x = 3,415,377,728.74
  5. Step 5: Solve for x
    x = 3,415,377,728.74/78,831.95
  6. Step 6: Final answer
    x = 43,324.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.